| NPA | NasoPharyngeal Airway 
| Others |
| NPA | nasopharyngeal aspirate
| Others |
| NPA | nasopharyngeal Aspiration
| Others |
| NPA | National PACE Association
| Others |
| NPA | National Parking Association
| Others |
| NPA | National Parks Association
| Others |
| NPA | National Particleboard Association
| Others |
| NPA | National Partnership for Action
| Others |
| NPA | National Pasta Association
| Others |
| NPA | National Pawnbrokers Association
| Others |
| NPA | National Pediculosis Association
| Others |
| NPA | National People's Action
| Others |
| NPA | National Performing Assets
| Others |
| NPA | National Perinatal Association
| Others |
| NPA | National Petroleum Association
| Others |
| NPA | National Pharmaceutical Association
| Others |
| NPA | National Pharmacists' Association
| Others |
| NPA | National Pharmacy Association
| Others |
| NPA | National Phlebotomy Association
| Others |
| NPA | National Phreaker's Alliance
| Others |
| NPA | National Physicians Alliance
| Others |
| NPA | National Pig Association
| Others |
| NPA | National Pigeon Associarion
| Others |
| NPA | National Pigeon Association
| Others |
| NPA | National Pitching Association
| Others |
| NPA | National Plan of Action
| Others |
| NPA | National Pokemon Association
| Others |
| NPA | National Police Academy
| Others |
| NPA | National Policy Association
| Others |
| NPA | National Polygraph Association
| Others |
| NPA | National Portage Association
| Others |
| NPA | National Postdoctoral Association
| Others |
| NPA | National Powersport Auctions
| Others |
| NPA | National Preparatory Association
| Others |
| NPA | National Prescription Administrators
| Others |
| NPA | National Prescription Audit
| Others |
| NPA | National Priority Area
| Others |
| NPA | National Processing Agreement
| Others |
| NPA | National Procurement Authority
| Others |
| NPA | National Production Authority
| Others |
| NPA | National Program of Action
| Others |
| NPA | National Programme of Action
| Others |
| NPA | National Promotions and Advertising
| Others |
| NPA | National Prosecuting Authority
| Others |
| NPA | National Prosecution Authority
| Others |
| NPA | National Prostate Association
| Others |
| NPA | Nationwide Pawnbrokers Affiliation
| Others |
| NPA | Natural Philosophy Alliance
| Others |
| NPA | Natural Products Association
| Others |
| NPA | Naval Air Station Pensacola
| Others |
| NPA | Nawong Puros Agtang
| Others |
| NPA | near field accommodation
| Others |
| NPA | Nebraska Pharmacists Association
| Others |
| NPA | Neighborhood Planning Assemblies
| Others |
| NPA | Net Pay Advice
| Others |
| NPA | Netware Peripheral Architecture
| Others |
| NPA | Network Pacific Asia
| Others |
| NPA | Network Peripheral Architecture
| Others |
| NPA | Network Point Address
| Others |
| NPA | Network Point of Attachment
| Others |
| NPA | Network Printing Alliance
| Others |
| NPA | Network Professional Association
| Others |
| NPA | Network Provider Access
| Others |
| NPA | Neutral Protease Activity
| Others |
| NPA | Nevada Psychological Association
| Others |
| NPA | New People's Army
| Others |
| NPA | New Peoples Army
| Others |
| NPA | New Pheromone Additive
| Others |
| NPA | Newark Pride Alliance
| Others |
| NPA | Newspaper Publishers Association
| Others |
| NPA | Next Point of Action
| Others |
| NPA | Next Preventative Appointment
| Others |
| NPA | Nigeria Police Academy
| Others |
| NPA | Nigerian Port Authority
| Others |
| NPA | Nigerian Ports Authority
| Others |
| NPA | Nilcrom Porcelain Australia
| Others |
| NPA | No Parental Authorization
| Others |
| NPA | No Parents Allowed
| Others |
| NPA | No Party Affiliation
| Others |
| NPA | No Permanent Address
| Others |
| NPA | No Picture Available
| Others |
| NPA | No Political Affiliation
| Others |
| NPA | No Power Alarm
| Others |
| NPA | Non Participant Assembly
| Others |
| NPA | Non Partisan Association
| Others |
| NPA | Non Performing Asset
| Others |
| NPA | Non Performing Assets
| Others |
| NPA | Non Peroxide Activity
| Others |
| NPA | Non Personal Awareness
| Others |
| NPA | Non Personalized Ads
| Others |
| NPA | Non Pronounceable Acronym
| Others |
| NPA | Non Prosecution Agreement
| Others |
| NPA | Non Public Agency
| Others |
| NPA | Non-Partisan Association
| Others |
| NPA | Non-Performing Asset
| Others |
| NPA | Non-Performing Assets
| Others |
| NPA | Nonfiction Producers Association
| Others |
| NPA | Normal Propyl Alcohol
| Others |
| NPA | North Pacific Airlines
| Others |
| NPA | North Pacific Ocean
| Others |
| NPA | Northcoast Preparatory Academy
| Others |
| NPA | Northeast Pediatric Associates
| Others |
| NPA | Northern Periphery and Arctic
| Others |
| NPA | Northern Phreaker's Alliance
| Others |
| NPA | Northern Plains Area
| Others |
| NPA | Northland Preparatory Academy
| Others |
| NPA | Northwest Perennial Alliance
| Others |
| NPA | Northwest Prospects Academy
| Others |
| NPA | Northwest Pyrotechnics Association
| Others |
| NPA | Norwegian Peoples Aid
| Others |
| NPA | Nosferatu Players Association
| Others |
| NPA | Not Paying Attention
| Others |
| NPA | Notary Public Administrators
| Others |
| NPA | Notice of Proposed Assessment
| Others |
| NPA | Nouveau Parti Anticapitaliste
| Others |
| NPA | Novell Product Announcement
| Others |
| NPA | Nuclear Physics A
| Others |
| NPA | Number of Projected Attributes
| Others |
| NPA | Number Portability Area
| Others |
| NPA | Numbering Plan Area
| Others |
| NPA | Numeral Prefix Allocation
| Others |
| NPA | Nurse Practice Act
| Others |
| NPA | Nurse Practitioner Association
| Others |
| NPA | Nursing Practice Act
| Others |